ulphuric acid, working at the boil to shade.

_Deep Sky Blue_.--A fine shade is dyed in a bath containing 4 oz.
Cyanole extra, 10 lb. Glauber's salt and 2 lb. acetic acid.

_Electric Blue_.--Make the dye-bath with 4 oz. Cyanole extra, 1 oz.
Acid Green extra, and 10 lb. bisulphate of soda.

_Bright Blue_.--A very fine shade of blue can be dyed in a bath
containing 3 lb. Cyanole extra and 10 lb. bisulphate of soda.

_Dark Navy Blue_.--Prepare the dye-bath with 4 lb. Cyanole extra,
9 oz. Archil Substitute N, and 10 lb. bisulphate of soda.

_Dark Navy_.--Prepare the dye-bath with 5 lb. Black Blue O, 1-3/4 oz.
Formyl Violet S 4 B, 4 oz. Patent Blue V, 25 lb. Glauber's salt, and
4 lb. bisulphate of soda, adding 1 lb. sulphuric acid when the dyeing
is about half done.

The navy blues given in the last few recipes possess the merit of
considerable resistance to light, air and milling.

_Pale Blue_.--Make the dye-bath with 1/2 oz. Chromotrop 2 R, 4 oz.
Cyanine B, 7-1/2 oz. Fast Acid Blue R, 1/2 oz. Azo Yellow, 10 lb.
acetic acid, and 15 lb. Glauber's salt.

_Peacock Blue_.--A fine shade is dyed with 14 oz. Cyanine B, 1-1/2 lb.
Fast Acid Blue R, 2 oz. Azo Yellow, 10 lb. acetic acid, and 15 lb.
Glauber's salt.

_Dark Invisible Blue_.--Make the dye-bath with 2 lb. Victoria (p. 156)
Black Blue, 10 lb. Glauber's salt, and 3 lb. sulphuric acid.

_Bright Blue_.--A very fine shade of blue, not, however, fast to
light, is dyed from a bath containing 1/2 lb. Victoria Blue B, and
10 lb. Glauber's salt.

_Bright Electric Blue_.--Prepare a dye-bath with 3/4 lb. Glacier Blue,
10 lb. Glauber's salt and 3 lb. sulphuric acid, working at the boil.
This gives a very bright green shade of blue.

_Dark Peacock Blue_.--Make the dye-bath with 1 lb. Naphthol Blue
Black, 10 lb. Glauber's salt, and 3 lb. sulphuric acid.

Peri Wool Blues B & G dye wool in very fast dark blue shades from
baths of Glauber's salt and acetic acid. They are dye-stuffs which
form with copper blue colour lakes of some fastness. The copper is
amalgamated with the dye-stuffs as put on the market.

_Pale Navy Blue_.--Mordant, 4 lb. bichromate of potash and 1-1/2 lb.
oxalic acid. Dye, 2-1/2 lb. Alizarine Bordeaux B.

_Navy Blue_.--Mordant, 4 lb. bichromate of potash and 2 lb. oxalic
acid. Dye, 7 lb. Alizarine Bordeaux G.

_Bright Violet Blue_.--Mordant, 3 lb. fluoride of chrome and 2 lb.
oxalic acid. Dye, 3/4 lb. Celestine Blue B.

_Navy Blue_.--A reddish s